300A JBD BMS for LiFePO4 (with Bluetooth) – 12V 4S


Ideal for bulk and wholesale orders. This JBD BMS is ideal for use with our 3.2v EVE LiFePO4 Prismatic Cells.

The JBD 4S 12V 300A BMS, complete with Bluetooth module, offers an affordable battery management system solution, enabling you to manage and maintain the performance of your cells.

This BMS is suitable up to an operating current of 300A in 4 series (4S) battery packs.

The BMS is an integral part of your LiFePO4 battery system, it helps to elongate the lifespan of your unit by protecting your cells against any potential faults during the Charge/Discharge cycle, it does this by quickly preventing any electrical flow to the unit should an issue be detected.

Ensuring your LiFePO4 cells are connected to a good BMS can help prevent against;

  • Overcharging
  • Overvoltage
  • Unbalanced cells
  • Temperature damage 
  • Over-discharging and,
  • short circuits.

Additionally, a BMS allows you to control and adapt cell operating functions, perform diagnostics and record data, determine critical levels such as pack State of Health (SOH) and State of Charge (SOC).

Note: JBD have provided no instructions, aside from those included in the documentation available on the downloadable PDF. We strongly recommend that you have a good working knowledge of LiFePO4 systems and BMS electrical equipment before purchasing this product.

Please be aware, this version does not come with heating, CAN or RS485 input. No Series or Parallel Support.


x1 JBD 12v 300A 4S BMS
x1 Temperature Sensor
x1 400mm Ribbon cable
x1 Bluetooth Module


Model  300A
Cell Chemistry  LiFePO4
Pack Structure
Cell Voltage Range 2.2~3.75v
Cont. Charge Current 80-300A
Cont. Discharge Current  80-300A
Operation Mode Common Port
Operating Temperature  -20°C~75°C
P- / C-Connection Type  M6 Threaded Terminal – 2 each (6 total)
Circuit Resistance  ≤10mR
Size  230mm (L) x 110mm (W) x 22 (H) mm
Sleep Conditions  Delay 1min±30s under no current \ communication \ protection state

In stock

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